: [neonixie-l] B7971 - better contrast
I have a MOD_6 with pin-top tubes in them. Absolutely no visual difference to the non-pin ones when compared side by side.
Jeff, you should have bought more when you could
I still rue the day when I thought a box of 100 IN14's at $99
1 spare).
Michail
From: neonixie-l@googlegroups.com On Behalf Of
Nicholas Stock
Sent: Thursday, July 6, 2023 11:14 AM
To: neonixie-l@googlegroups.com
Subject: Re: [neonixie-l] B7971 - better contrast
I have a MOD_6 with pin-top tubes in them. Absolutely no visual difference to
the non-pin ones
I have a MOD_6 with pin-top tubes in them. Absolutely no visual difference to the non-pin ones when compared side by side.Jeff, you should have bought more when you could I still rue the day when I thought a box of 100 IN14's at $99 was expensive.NickSent from my iPhoneOn Jul 6, 2023, at
I have one of the pin top tubes
(https://n2jtx.com/NixieClock/Used%20Burroughs%20B-7971.jpg). Unlike most
of my other tubes, it is a Burroughs branded tube and not Ultronics. The
only thing I ever noticed different about it was it seemed to have a deeper
red glow than the Ultronics tubes which
I have a number of these "rare pin-top" B-7971's and do not find any
significant difference in contrast with the Ultronics versions of the 7971s .
The pin-topped or "antenna top" construction is an early format that uses a
wired backplane instead of the PCB style interconnect. It's a nice
